Выполныте действамы; 30 4/5 - 1 2/3 * (1 4/5 * ( 12 7/12 - 9 19/36 )- 17/35 * 1 11/34 ) =

=22 74/105

1)   12 7/12 - 9 19/36=12 21/36 - 9 19/36=3 2/36=3 1/18

2)   1 4/5 * 3 1/18=9/5 * 55/18=11/2=5 1/2

3)   17/35 * 1 11/34=17/35 * 45/34=9/14

4)   5 1/2 - 9/14=5 7/14 - 9/14=4 21/14 - 9/14=4 12/14=4 6/7

5)   1 2/3 * 4 6/7=5/3 * 34/7=170/21=8 2/21

6)   30 4/5 - 8 2/21=30 84/105 - 8 10/105=22 74/105